Here is one of my first serious projects with PD-extended. As the title of the file indicates, it was made to sequence ReDrum in Reason (even though that already has a very capable sequencer), but it will work for any drum machine that uses MIDI notes 36-45.

There is a flamming device that will send out delayed, lower velocity copies of each hit in which it is engaged. You can simply turn on flam or off, or you can designate which steps you want it for by engaging 'FLAM_AUTOMATE' and switching on the desired steps at the bottom.